Shaver guard



2 sheds-sheet 1 IN VEN TOR.

Dec l5, 1931. 1. M LUCARELLE SHAVER GUARD Dec. l5, 1931.

J. M4 LUCARELLE 1,837,167

SHAVER GUARD Filed July 13; 1928 2 Sheets-Sheet 2 INVENTOR. Y

Patented Dec. 15, 1931 UNITED STATES Alf'a'rlsNr OFFICE JOSEPH M. LUCARELLE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR T0 DICTAPHONE CORPORATION, 0F BRIDGEPORT, CONNECTICUT, A CORPORATION 0F NEW YORK SHAVER GUARD Application led July 13, 1928. Serial No. 292,340.

This invention relates to record resurfacing machines for shaving records intended for use with dictat-ion machines, and more particularly to guards therefor.

Among others, it is an object of this invention to provide a guard arranged to prevent fragments of a record from flying into the operators face in the event that the record should break during the resurfacing operation.

The term record is used throughout this specification to designate any member upon which speech has been or may be recorded by a dictation machine.

The accompanying drawings and the description thereof disclose one illustrative embodiment of the invention.

In the drawings:

Figure 1 is a front view of a record resurfacing machine with a guard illustrating the invention mounted thereon; and

Figure 2 is a vertical sectional view on line 2 2 of Fig. 1. Y

The record resurfacing machine disclosed in the accompanying drawings comprises a base l, upon which are mounted the left hand standards 2 and 2a, and the right hand standard 3. Also there is mounted upon the base 1 and near the front edge thereof, a guide rail l. Between the standard 2 and the opposite end of the machine where an end gate 3a is mounted pivotally on the standard 3, a shaft 5 is supported for rotation in suitable bearings. Mounted upon the shaft 5 near the left hand end thereof are the pulleys 6 and 7 The shaft 5 may be rotated by convenient means such as the pulley 6 connected by a belt 8 to any suitable driving motor, not shown. Upon the shaft 5 a mandrel 9 is fixedly mounted, and the mandrel in turn is adapte-d to support a cylindrical record 10.

As best shown in Figs. 1 and 2, between the standards 2 and 3 are supported a guide rod 11 and feed screw 12. The guide rod 1l carries slidably thereupon a carriage lhaving a forwardly projecting portion 13a which is provided with a shoe 14 adapted to ride along the rail 4 of the frame. The forwardly projecting portion 13a of the carriage has an enlarged hand grip portion 15, and the body of the carriage 13 supports a record cutter 16. Movement of the cutter 16 with the carriage 13 along the record 10 is accomplished by rotation of the feed screw 12 which is in engagement with a feed nut 17 mounted on the carriage 13.

Reverting to Fig. 1, on the left-hand end of the feed screw 12 is mounted a pulley 18 which is connected by a belt 19 with the pulley 7 on the shaft 5.V Thus it will be seen that rotation of the shaft 5 causes the feed screw 12 to be rotated and the record cutter 16 to be moved along the rotating record. Further descriptionof the resurfacing machine as a whole is unnecessary toa disclosure of this invention. Y

At the front of the machine the guide rail 4 is provided with two spaced machine screws 20, with their heads' spaced from the inner face of the guide rail. The screws 2O support a guard or shield 21, which may conveniently be of sheet metal and of substantially the same length as the mandrel 9. The guard 21 has near its lower edge two slot-like openings 22 to lit over the screws 20. These elongated openings 22 are'throughout the greater portion of their length slightly narrower than the diameter of the screw heads, but slightly wi der than the diameters of the barrels of the screws 20. The openings 22 are enlarged near one end to an extent suiiicient to receive the heads of these screws, so that the guard can be put in place at the enlarged ends of the openings and then moved to one side so that it will be held by the overlying heads. With this arrangement the guard 21 may be readily attached to and detached from the guide rail, and without the use of tools.

As may be seen in Figure 2, the guard 21 is preferably curved in such a manner as to overlie the mandrel 9 and record 10, and to underlie the forwardly projecting arm of the carriage 13 without interfering in any way with the movement of this carriage along the rod 11 and over the guard 21. In order that the operator may observe the progress of the shaving operation at all times the guard 21 is preferably provided with an observation opening 25 therein extending substantially the full lengthl of the mandrel. There is mounted in this opening 25, and preferably completely filling it, a suitable transparent member 23 which is not readily shattered by impact, for example, Celluloid. The transparent member 23 may be conveniently held in place by any suitable means such as the marginal strip members 24 which are fastened to the guard 21 by rivets 26.

The invention provides a guard overlying the record to prevent flying record fragments from striking the operator, While at the same time permitting his continuous observation of substantially the full length of the record so that he may observe the progress of the shaving. With this arrangement it is safe to run the mandrel at high speeds, and so reduce the time required for resurfacing records, and obtaining other advantages unnecessary to point out.

It will be understood thatV the invention may be variously modified and embodied Within the scope of the subjoined claims.

Claims:

1. The combination i-n a guard for a record resurfacing machine, of a substantially rectangular member of sheet material having an opening therein, a transparent member, a border member secured to said rectangular member for attaching the edges of said transparent member to said rectangular member so that the transparent member completely cove-rs the opening in the rectangular member, and means for readily attaching the guard to a record resurfacing machine to l overlie the mandrel thereof.

9,. T he combination in a device of the char acter described of a record-supporting mandrel, a carriage movable relatively to said mandrel, a guide rail for said carriage, fastening means mounted on said guide rail, and a guard attached to said guide rail by means of slots forming a slip joint with said fastening means, said guard being arranged to eX- tend in front of and to overlie said mandrel.

' In testimony whereof, I have signed my name to this specification this 2nd day of July JOSEPH M. LUCARELLE. 

